Subcommands should be parsed with [subparser](https://docs.python.org/3/library/argparse.html#sub-commands) so that help messages in subcommands can be displayed properly. Related issue https://github.com/operator-framework/operator-courier/pull/85#discussion_r269603038
Subcommands should be parsed with subparser so that help messages in subcommands can be displayed properly.
Related issue #85 (comment)